654560 has 24 divisors (see below), whose sum is σ = 1546776. Its totient is φ = 261760.

The previous prime is 654553. The next prime is 654571. The reversal of 654560 is 65456.

It is a congruent number.

It is an unprimeable number.

654560 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1886 + ... + 2205.

It is an arithmetic number, because the mean of its divisors is an integer number (64449).

2⁶⁵⁴⁵⁶⁰ is an apocalyptic number.

It is an amenable number.

654560 is an abundant number, since it is smaller than the sum of its proper divisors (892216).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

654560 is a wasteful number, since it uses less digits than its factorization.

654560 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4106 (or 4098 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 654560 is about 809.0488242374. The cubic root of 654560 is about 86.8260053604.

The spelling of 654560 in words is "six hundred fifty-four thousand, five hundred sixty".